Gretel-client

What's Changed
* Add Discord badge to readme by csbailey5t in https://github.com/gretelai/gretel-python-client/pull/65
* Upgrade click and sentencepiece

New Contributors
* csbailey5t made their first contribution in https://github.com/gretelai/gretel-python-client/pull/65

**Full Changelog**: https://github.com/gretelai/gretel-python-client/compare/v0.15.3...v0.15.4

Housekeeping :broom:
- Add warnings when using deprecated blueprint configurations.
- Fix failing test missing client configuration

Enhancements 🎉
* Better error message if API key is missing or invalid
* Better error message for `403` errors
* Add helper for new API endpoint to get artifact manifest
* Raise exception when `configure_session` helper fails to validate
* Allow peeking report for Amplify models

**Full Changelog**: https://github.com/gretelai/gretel-python-client/compare/v0.15.1...v0.15.2

🐛 Restore default functionality for `Jobs.peek_report` - this way if a report path is not provided, the client will attempt to check Gretel Cloud for a report artifact first.

Enhancements 🎉
* New ACTGAN model released f7954256939295ee63b9a8aeb4deb82b77c9bfb9

Bugfixes 🐛
* Fix `peek_report` `None` handling 7e341818c11e8e92085546c3079c473c287cfdec

**Full Changelog**: https://github.com/gretelai/gretel-python-client/compare/v0.13.0...v0.14.0